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Structural rearrangement and dispersion of functionalized graphene sheets in aqueous solutions

Author(s): Lee, Yun Jung; Huang, Liwei; Wang, Howard; Sushko, Maria L.; Schwenzer, Birgit; et al

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dc.contributor.authorLee, Yun Jung-
dc.contributor.authorHuang, Liwei-
dc.contributor.authorWang, Howard-
dc.contributor.authorSushko, Maria L.-
dc.contributor.authorSchwenzer, Birgit-
dc.contributor.authorAksay, Ilhan A.-
dc.contributor.authorLiu, Jun-
dc.date.accessioned2020-01-28T22:55:55Z-
dc.date.available2020-01-28T22:55:55Z-
dc.date.issued2015en_US
dc.identifier.citationLee, YJ, Huang, L, Wang, H, Sushko, ML, Schwenzer, B, Aksay, IA, Liu, J. (2015). Structural rearrangement and dispersion of functionalized graphene sheets in aqueous solutions. Colloids and Interface Science Communications, 8 (1 - 5). doi:10.1016/j.colcom.2015.12.002en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1c186-
dc.description.abstractSurfactants are widely used for dispersing graphene and functionalized graphene sheets (FGS) in colloidal suspensions, but there have been few studies of the structure of the dispersed graphene–surfactant complexes in suspension and of their time evolution. Here, we combine experimental study of efficiencies of ionic surfactants/polymers in suspending FGS in water with characterization using atomic force microscopy, small angle neutron scattering, and molecular simulations to probe the detailed structures of FGSs. The small angle scattering technique provides quantitative measurement of structure of graphene sheets in the solution. This study suggests that in both ionic and nonionic surfactants, the dispersion tends to degrade over time through detachment of the surfactant molecules and structural rearrangements. Ionic surfactants with strong interfacial binding and large molecular weight increase the dispersing power by over an order of magnitude.en_US
dc.format.extent1 - 5en_US
dc.language.isoen_USen_US
dc.relation.ispartofColloids and Interface Science Communicationsen_US
dc.rightsFinal published version. This is an open access article.en_US
dc.titleStructural rearrangement and dispersion of functionalized graphene sheets in aqueous solutionsen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1016/j.colcom.2015.12.002-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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